Color-coded ballots for each Oklahoma County district are pictured at the Oklahoma County Board of Elections in Oklahoma City, Thursday, June 23, 2016. The ballots are color-coded according to party.

Sue Ogrocki
/ AP

Oklahomans may not be able to vote for two presidential candidates this fall, including one high-profile third-party hopeful.

Green Party nominee Jill Stein and independent candidate Rocky de la Fuente are taking legal action to try to get on the ballot in November by arguing Oklahoma’s ballot access laws are too strict, The Journal Record’s Dale Denwalt reports:

The lawsuit is joined by several voters who support the candidates.

Tulsa attorney James Linger wrote in the lawsuit that Oklahoma has an unnecessarily early filing deadline, a petition signature requirement that is too high and that the law discriminates against presidential candidates who are not Republican or Democrat.

“Since this law has been in effect, the last time it was complied with was Ross Perot in 1992,” Linger said Friday. “In the last 24 years, no one has been able to comply with it.”

It’s also easier for third party candidates on the local level to get on the ballot. The newly official Oklahoma Libertarian Party needed 16,000 fewer signatures than presidential candidates did.

“It’s very easy if you want to be an independent candidate for any other office than president,” he said. “We have a long history of no one being successful in being able to comply with it.”

The petitioners have asked the court to rule several ballot access laws unconstitutional and allow voters to cast ballots for Stein or Fuente. Their request for a preliminary injunction was quickly rejected by U.S. District Judge Stephen Friot because of a technical error. Linger said the campaigns are still considering whether to file a separate, correct motion for immediate injunctive relief.

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Third parties are not new to American politics. The Anti-Masonic Party emerged in the 1820s to campaign against the Freemasons, which its members viewed as corrupt. The Free Soil Party opposed the expansion of slavery in the years before the Civil War. Others throughout history have emerged to champion various causes, like the Know-Nothings, the Progressives, the Prohibition Party, the Reform Party and many others.

The Green Party officially nominated Jill Stein for president and human rights activist Ajamu Baraka as her running mate on Saturday, at a convention in Houston that attracted many disaffected Bernie Sanders supporters.

Much of the three-day gathering was an explicit appeal to former backers of the Vermont senator to join their fold, and several speakers argued that Sanders had been treated unfairly by the Democratic Party.